Socket core for pipe molds



3 Sheets-Sheet 1 E. HERING SOCKET coma FOR PIPE MOLDS Filed Sept. 1924 Aug. 3"

Aug. ,3- I926.

E. HERING SOCKET'CORE FOR PIPE MOLDS Filed Sept. 6, 1924 3 Sheets-Sheet 2 Patented Aug. 3, 1926.

UNITED STATES 1,594,366 PATENT OFFICE.

EDWARD HERING, 0F BEVERLY, NEW JERSEY, ASSIGNOR TO UNITED STATES CAST IRON PIPE & FOUNDRY COMPANY, OF BURLINGTON, NEW JERSEY, A CORPORA- TION OF NEW JERSEY.

SOCKET CORE FOR PIPE MOLDS.

Application filed September 6, 1924. Serial No. 736,221.

My invention relates to socket cores for pipe molds and is particularly designed for use in connection with centrifugal molds, although obviously adaptable for other uses.

The object of my invention is to provide a segmental socket core which can be assembled in the mold and after the pipe is cast withdrawn from the mold without injury to the segments of the core.

The nature of my invention in the best form I have contemplated applying it in use will be understood as described in connection with the drawings, in which- Figure l is an end view of a pipe mold with my socket core secured in the bell end of the mold in the central position and ready for use in casting.

Figure 2 is a sectional view on the line 2-2 ofFig. 1.

Figure 3 is a similar sectional view showing two positively located segments rotated out of the mold.

Figure 4 is a cross section on the line 4-4 of Fig. 1.

Figure 5, a similar cross section showing two of the segments rotated out of the mold and a third segment as shifted in the mold preparatory to rotating it ou of the mold.

F igure 6 is a sectional view taken as on the line 66 of Fig. 1.

Figure 7, a similar View showing the position of the parts when the arm F is rotated to the position shown in Fig. 3, and

Figure 8 is a cross sectional View on the line 8-8 of Fig. 1.

A indicat s the centrifugal pipe mold having a bell end A and a flanged terminal A A indicating a circular seat formed at the outer end of the bell. B is an annular ring detachably secured to the flanged end of the mold as by fastenings indicated at D, having as shown two outwardly extending arms indicated at B. From the face of the ring and its arms B extend the lugs C, (l, and C, C, which support the pivot pins to be described. E, E, and E, E, are the four segments making up when assembled together a socket core. 6 and 6 indicating the abutting ends of the segments and the small segments E being so shaped that their ends e diverge inwardly from each other, while the wider segments E are, of course, shaped so that their ends will fit against the ends of the segments E. The segments E and E are carried on arms F and F, the. arms F being pivoted on the lugs C, C, by means of pins G having squared .portions G, with which the arms F engage. The-portion of the pin G which fits in one of the sockets C has a detent depression G formed in it and on the lug is secured a latch pin H held in a spring box H and formed with a shoulder H by means of which and a spring H the spring is pressed inward so that, when the pin G is rotated to bring the socket G into registry with the pin H, the parts will be lockedtogether.

The arms F supporting the segments E are fori'ned with slots F at their outer ends and with shoulders F and F lying on each side of the slots F These arms are pivotally supported on the lugs C but are not directly engaged with the pins g, g, which extend between the lugs C and the squared portions of which are fitted with bushings indicated at I and I.

The squared portions 9 do, however, positively engage with cams J, J; locking pins H are provided for the pins g as in the first described constr-u cti on.

L indicates the bell end of the cast pipe. In operation. the segments are assembled in the end of the mold to form a socket core, as shown in Figs. 1 and 2, and the casting L formed in the mold. After the casting is formed, one of the shorter segments E, and afterward the other shorter segment, is rotated outward from a position shown in Fig. 3, and these segments are locked in their upward position by the latched pins H, as shown. The wider segments E can be rotated out of the mold in the same way and it isnecessary to first shift them inward and this is accomplished by rotating the pins 9 and after them the cams J, J, the cam turning from the position shown in Fi 4 to the position shown in Fig. 5, in whic last mentioned position it will be seen that the cam contacts with the stop lugs F and F so that on the further rotation of the pin 9 the segment E, which by the cam action has been forced to the position shown at the right hand of Fig. 5, can be rotated out of the mold to the position shown at the left hand side of Fig. 5, and located in this outer position by the latch pin H. The segments having been removed from the mold, the

castimr can be withdrawnafter which the segments are rotated back into the mold to re-assemble them preparatory to another casting.

It will be seen that in my construction all of the segmentsend the mechanism having to do with their movements are removab y attached to the end of the mold through the annular ring B.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A socket core for pipe molds comprising multiple segments adapted when fitted together to form an annular, collapsible socket core, the abutting ends of the segments being shaped as described to permit the segments to be separably moved inward and outward to disengage them from the casting in combination with segment supporting arms pivotally connected to the end of a pipe mold and means for rotating said arms to disengage the segments from the casting.

2. A socket core for pipe molds comprismg multiple segments adapted when fitted together to form an annular collapsible socket core, the abutting ends of the segments being shaped as described to permit the segments to be separably movedinward andoutward to disengage them from the casting 1n combination with segment supporting arms pivotally connected to the end of a pipe mold. means for rotating said arms to disengage the segments from the casting and means for locking said arms in disengaged position.

3. A socket core for pipe molds comprismg multiple segments adapted when fitted together to form an annular collapsible socket core, the abutting ends of the segments being shaped as described to permit the segments to be separately moved inward and cutward to disengage them from the casting in combination with segment supporting arms pivotally connected to the end of a pipe mold, means for shifting the arms carrying the wider segments laterally to clear the supported segments from the castf%1 rotating the arms on draw the segments from ing in combination with segment supporting.

arms pivotally connected to the end of a pipe mold, the pivotal connection of the arms carrying the segments which are wider on their inner faces being such as will permit a lateral movement of the arms towards and away from the center of the mold, means for rotating the arms to withdraw the segments from the casting, said means including cams acting on the laterally mov-- able arms to' move them inward before the arms are rotated.

5. -A socket core for pi e molds com rising multiple segments a apted when tted together to form an annular, collapsible socket core, the abutting ends of the segments being shaped as described to permit the segments to be separately moved inward and outward to disengage them from the casting in combination with a ring attachable to the end of a mold, rotatable studs supported on EDWARD HERING. 

